code: def familysrc(self, val):
      self["familysrc"] = val
  
file_path: plotly.py/packages/python/plotly/plotly/graph_objs/sankey/link/hoverlabel/_font.py
imports: from plotly.basedatatypes import BaseTraceHierarchyType
  import copy
label_desc: Use image node_id 8 for calling the Font obj's underlying member method code with example usage: obj.familysrc(val) without return types